Low Battery Message on Keypad

a. "Low Bat" (no zone Nos.)
b. "Low Bat" + "00".
c. "Low Bat" + "nn". 

POSSIBLE CAUSE

a. System battery is low or missing.

b. Remote RF keypad/button battery is low.

c. Transmitter for zone “nn” has a low
battery.

d. Standard- or High-Capacity battery
connected to the wrong receptacle. 

REMEDY

a. Replace the system battery.

b. Replace the battery in the RF keypad.

c. Replace the battery in the displayed
transmitter.

d. Ensure that the battery is properly connected